с++
.pdfcout << fixed << showpoint << setprecision( 1 );
for ( int j = 0; j < SIZE; j++ )
cout << *( nPtr + j ) << ' ';
Question: Use a for statement to print the elements of array numbers using pointer/offset notation with the array name as the pointer
cout << fixed << showpoint << setprecision( 1 );
for ( int k = 0; k < SIZE; k++ )
cout << *( numbers + k ) << ' ';
Question: Use a for statement to print the elements of array numbers using pointer/subscript notation with pointer nPtr
cout << fixed << showpoint << setprecision( 1 );
for ( int m = 0; m < SIZE; m++ )
cout << nPtr[ m ] << ' ';
Question: Refer to the fourth element of array numbers using array subscript notation, pointer/offset notation with the array name as the pointer, pointer subscript notation with nPtr and pointer/offset notation with nPtr
numbers[ 3 ]
*( numbers + 3 )
nPtr[ 3 ]
*( nPtr + 3 )
Question: Assuming that nPtr points to the beginning of array numbers (the starting address of the array is at location 1002500 in memory), what address is referenced by nPtr + 8?
The address is 1002500 + 8 * 8 = 1002564
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Declare the variable fPtr to be a pointer to an object of type double.
double *fPtr;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Assign the address of variable number1 to pointer variable fPtr.
fPtr = &number1;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Print the value of the object pointed to by fPtr.
cout << "The value of *fPtr is " << *fPtr << endl;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Assign the value of the object pointed to by fPtr to variable number2.
number2 = *fPtr;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Print the value of number2.
cout << "The value of number2 is " << number2 << endl;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Print the address of number1.
cout << "The address of number1 is " << &number1 << endl;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Print the address stored in fPtr.
cout << "The address stored in fPtr is " << fPtr << endl;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Copy the string stored in array s2 into array s1.
strcpy( s1, s2 );
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Compare the string in s1 with the string in s2, and print the result.
cout << "strcmp(s1, s2) = " << strcmp( s1, s2 ) << endl;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Append the first 10 characters from the string in s2 to the string in s1.
strncat( s1, s2, 10 );
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Determine the length of the string in s1, and print the result.
cout << "strlen(s1) = " << strlen( s1 ) << endl;
Question: Write a single statement that performs the specified task. Assume that floating-point variables number1 and number2 have been declared and that number1 has been initialized to 7.3. Assume that variable ptr is of type char *. Assume that arrays s1 and s2 are each 100-element char arrays that are initialized with string literals. Assign to ptr the location of the first token in s2. The tokens delimiters are commas (,).
ptr = strtok( s2, ",");
Question: Write the function header for a function called exchange that takes two pointers to double-precision, floating-point numbers x and y as parameters and does not return a value
void exchange( double *x, double *y )
Question: Write the function header for a function called evaluate that returns an integer and that takes as parameters integer x and a pointer to function poly. Function poly takes an integer parameter and returns an integer.
int evaluate( int x, int (*poly)( int ))
Question: Write two statements that each initialize character array vowel with the string of vowels, "AEIOU".
char vowel[] = "AEIOU";
char vowel[] = { 'A', 'E', 'I', 'O', 'U', '\0' };
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; |
// zPtr will reference array z |
int *aPtr = 0;
void *sPtr = 0;
int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 };
++zPtr;
zPtr = z;
++zPtr;
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; |
// zPtr will reference array z |
int *aPtr = 0;
void *sPtr = 0;
int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 };
// use pointer to get first value of array number = zPtr;
number = *zPtr;
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z
int *aPtr = 0; void *sPtr = 0; int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 };
// assign array element 2 (the value 3) to number number = *zPtr[ 2 ];
number = zPtr[ 2 ];
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z
int *aPtr = 0; void *sPtr = 0; int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 }; // print entire array z
for ( int i = 0; i <= 5; i++ ) cout << zPtr[ i ] << endl; for ( int i = 0; i < 5; i++ ) cout << zPtr[ i ] << endl;
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z
int *aPtr = 0; void *sPtr = 0; int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 };
// assign the value pointed to by sPtr to number number = *sPtr;
number = *static_cast< int * >( sPtr );
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z
int *aPtr = 0; void *sPtr = 0; int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 }; ++z;
++z[4];
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z
int *aPtr = 0; void *sPtr = 0; int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 }; char s[ 10 ];
cout << strncpy( s, "hello", 5 ) << endl;
cout << strncpy( s, "hello", 6 ) << endl;
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z int *aPtr = 0;
void *sPtr = 0; int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 }; char s[ 12 ];
strcpy( s, "Welcome Home");
char s[ 13 ];
strcpy( s, "Welcome Home");
Question: Find the error in the following program segment. Assume the following declarations and statements:
int *zPtr; // zPtr will reference array z int *aPtr = 0;
void *sPtr = 0; int number;
int z[ 5 ] = { 1, 2, 3, 4, 5 };
if ( strcmp( string1, string2 ) )
cout << "The strings are equal" << endl;
if ( strcmp( string1, string2 ) == 0)
cout << "The strings are equal" << endl;
Question: What (if anything) prints when the following statement is performed?Assume the following variable declarations:
char s1[ 50 ] = "jack"; char s2[ 50 ] = "jill"; char s3[ 50 ];
cout << strcpy( s3, s2 ) << endl; jill
Question: What (if anything) prints when the following statement is performed?Assume the following variable declarations:
char s1[ 50 ] = "jack"; char s2[ 50 ] = "jill"; char s3[ 50 ];
cout << strcat( strcat( strcpy( s3, s1 ), " and " ), s2 ) << endl; jack and jill
Question: What (if anything) prints when the following statement is performed?Assume the following variable declarations:
char s1[ 50 ] = "jack"; char s2[ 50 ] = "jill"; char s3[ 50 ];
cout << strlen( s1 ) + strlen( s2 ) << endl; 8
Question: What (if anything) prints when the following statement is performed?Assume the following variable declarations:
char s1[ 50 ] = "jack"; char s2[ 50 ] = "jill"; char s3[ 50 ];
cout << strlen( s3 ) << endl; 13
Question: Class members are accessed via the ________ operator in conjunction with the name of an object (or reference to an object) of the class or via the ___________ operator in conjunction with a pointer to an object of the class
dot (.), arrow (->)
Question: Class members specified as _________ are accessible only to member functions of the class and friends of the class
private
Question: Class members specified as _________ are accessible anywhere an object of the class is in scope
public
Question: __________ can be used to assign an object of a class to another object of the same class
Default memberwise assignment (performed by the assignment operator).
Question: Find the error(s) in the following and correct it (them).
Assume the following prototype is declared in class Time:
void ~Time( int );
~Time( );
Question: Find the error(s) in the following and correct it (them).
The following is a partial definition of class Time:
class Time
{
public:
// function prototypes
private:
int hour = 0;
int minute = 0;
int second = 0;
}; // end class Time
class Time
{
public:
// function prototypes
Time (int my_hour, int my_minute, int my_second)
{
hour=my_hour; minute=my_minute; second=my_second;
}
private: int hour;
int minute; int second;
}; // end class Time
Question: Find the error(s) in the following and correct it (them). Assume the following prototype is declared in class Employee: int Employee( const char *, const char * );
Employee( const char *, const char * );
Question: __________ must be used to initialize constant members of a class Member initializers
Question: A nonmember function must be declared as a(n) __________ of a class to have access to that class's private data members.
friend